Key-controlled device.



H. KRANTZ.

KEY CONTROLLED DEVICE. APPLICATION FILED 11111. 18. 1911.

Patented Jan. 28,1919;

I I Fill: II!!! 1 II I III III!!! .-HUIBERT xnaurz, or, .nnooxnyn, mw'YORK, ASSIGNOR r Kniim'z acoMPAnY,-mc.,-- or BRooKLYmNEW YORK,it"conrona'rrortor ronx.

. T0 'allit'kbihconcern '=siding-*at"Bio'okl in; the county of Kings YkQhave invented cer andSt ate'of Ne A .5 ftainnewfanthu f1lmprovements'in Kevgomiiond which the following a. specific'at a t vflThiiliiinl'ehtiollmi .,'tes o a key controlled v d'efie nilis ncertain part a division of my 06 p110 *filed fipriltl," 91'6"'" I p ilethe dtic i's'primarily intended for use in connection iwithelectriccircuits it nevertheless an be applied to other'uses ation Serial No.89,350,

" n arm, such for instance I yjthe use of akey of shape rand size, andwhich device will include means for positively and firmlyretainingthearm in its swung posiw"l at "the same time, qu" tfuse of the key, causet offthe invention is to n. such a simplified, eii form as to beadaptconnections, and id p'ensed as an article espective of theparticular vgbe applied" aims of the invention, than those referredto fobvious and in part ourseof the-following "leme'nts, combinations,

l more or less spec fi easier n'teniplated will be" pe ed 'cla ims.Vi'i'ig drawings which are apart of this specification,

a lioWn merely a preent of the invention: ical; sectional View 4'5 whichnve f0 v sheingvbroken away t in c'ti'o for better disclos- Ctlgenients; 1 r

a yertica sectionalview taken """looking in the"direction of the arrow;and 56 Fig. 3 is a horizontal sectional view taken lie invention relatesto beithrown from one away from its t {and applications of. 1 g theinvention; and.

ructed in accordance,

.c pil the lot, line II.II of Hig 1,,

H w, .x w at H Specification oftLetters Patent: '1 [Patented 'Jziih28,1919. t x .i' a i,- i I" "'79? Elf: Application filed January 18. 1917.Serial No 143,064. 1 i A upon the plane ofline III- 1H ofNF 1g; 1,

looking in the direction of the arrow. r 2

Referring to the drawing for describing in detail the structure which isillustrated therein, the reference character Lindicat-es the swingingamt This is pivotally mount ed as at 1 in suitable apertures" formedthrough the opposite sidemembers .2 and of a rectangular supportingframe G.

The swinging or free end ofthis-arm may be adapted for any mechanical orelectricalfunction, but preferably, for use as an electricswitch, itcarries. a spring or laminated 1 g contact member 4 adapted formakingeleetrical engagement with a pair of contact plates such as thoseillustrated at 5 and 6,3;

The plates 5 and 6 may besupported in any desired manner not forming a"partof this invention. a a

The contact member! is preferably insulated from the material of thearm-L in any suitable manner, as for instance by the insulating sections7 and 8. l i

In order to actuate the arm L a bell-crank lever 9 is provided, the samebeing piv'otally mounted within the frame G upon a pivot rod 10extending between the plates 2 and 3. The space as 11' between thearms12 and 13 a; of the bell-crank is'utilized for receiving theoperating portion of the key 34, as will. be readily understood from aninspection. of Fig. 1. Pressure of the key against ,the surface H'willswing the bel -crank in one i direction, while pressure of the-keyagainst the surface 15 will a reverse direction. t A

The free end of the arm-12 of the bellv crank is pivotally connected bya pair of links 16 with the. arm L. Breferablyuthe links are arrangedone at eachrsitle ofithe arm 12 and are'flreceived within oppositerecesses 17 formed in the s'idesuof tlielarm Y, L, the linksbeingpivotally connected toithe bell-crank bv-a pivot: pin .18 andlbeingpivotally connected. to the=arm Lby=ia "p i\- ot pin 19, as clearlyindicated. Tlie' links '16, together with the arm 12 of; the"belleera'nk constitute a toggle which- 1s moved-10m straightenedposition by swinging thekeyin one direction against the -surface?14 ofthe' 1 "bell crank, and which is moved -t o brt'iken swing the b nam 9oan abutmentto be engaged by the toggle when the toggle is in itsstraightened position. It is so arranged as to permit the toggle to moveslightly beyond straightened position so that the toggle becomesautomatically locked. Thispin serves also as an abutment for limitingthe movement of the arm L when the toggle is broken.

A compression coil spring H is arranged in a position between one of theend wallsagainst which the adjacent end of the spring rests at a pointspaced farther away from the arm L than the normal interior surface as25 of the wall. thus providing for. an increased length, andcorrespondingly improved resiliency. in the spring and at the same timeaffording a desirable thickness for the greater part of the length ofthe wall. The thickness of the wall is important in that it lendsrigidity to the structure. It may be added that the distance from thearm L to the outer surface of the wall is in many cases positivelylimited.

The lug 23 at the opposite end of the spring is shown to constitute thehead of a rivet as 26 which extends through the material of the arm L tothe inner surface of the arm. The .inner end of the rivet is formed upas at 27 to provide an appropriate hammer disposed for striking theabutment or pin 20 ateach operation of the device. This detail ofconstruction is important in that the blowsstruclt' against the abutment20 are of some severity and. being oft repeated would injure the arm L.By the use of the separately formed rivet it is apparent that the samemay be removed and renewed when desired.

Inorder to facilitate the easy introduction of the keyinto the keyhole28. a flared. or funnel-like escutcheon 29, is fixed to the outersurface of one of the plates. preferably the'plate 3, as indicated.

Although any suitable means may be provided for attaching this device inassociat-ion with other parts with which it is intendedto cooperate, thedrawing illustrates such attaching means as constituting lateralextensions 30 formedat the inner ends. of the plates 2 and 3 androjecting away from r each other to provide anges throughwhich screws orother fastening elements may be. driven. Preferably a broad thick wall.as -31; isarranged between the plates 2 and 3 at their inner ends. Theplates may be trolled toggle mechanism connected fixed to this wall andalso to the wall 21 in any preferred manner. but they are usuallyconnected by rivets as 32.

The pivot members 1 and 10. and also, if desired. the pin 20, arepreferably made detachabl being normally retained in position as bycotter pins 33. or the like. By

withdrawing these members the arm L with the toggle mechanism may bebodily re movedt'rom within the casing for repairs or otherwise.

The pivot members 18 and 19 are without heads and may, therefore, bereadily withdrawn when the parts are removed from the casing. While theparts are in operative position within? the casing. the side plates 2and 3 serve to retain the members 18 and 19 against accidentaldisplacement.

The labor and expense for assembling. both durin manufacture andsubsequently,

ismaterial y reduced. without in any way affecting the uniformlyefiicient character and durability of the structure.

As many changes could be made in this construction without departingfrom the scope of the following claims. it is intended that all mattercontained in the above .descrip'tion or shown in the accompanyingdrawing shall be interpreted as illustrative only and not in a limitingsense. I

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

1. In a device of the class described. a pivotally mounted arm arrangedto swing into two positions, means urging the arm toward one of itspositions. and key-controlled means for controlling and counteractingthe effects of said means at will.

, 2. n a device of the class describetha pivotally mounted arm arrangedto swing into two positions, a resilient member urging the arm. towardone of its positions. and key-controlled means for swinging said armagainst the tendency of said resilient mem- 3. In'a device of the classdescribed. a )ivotally mounted arm arranged to swing into two positions.a resilient member urging the arm toward one of its positions. andkey-controlled means for swingin said arm against thetendency of saidresi ient memher. said means comprising parts adapted to lock the armagainst the tendency of the resilient member.

t. In a device of the class describe-l. a pivotally mounted arm arrangedto ing into two positions. a spring urging the arm toward one of itspositions, and key-con- "ith said arm for swinging said arm againfsi thetendency of the spring and for locking: the arm against the tendency ofthe sprin;

5. In a device of the class (lescrib 'a I toward one of its posi heclass described, a a-Ij'ni arranged to swing arresting movement of thearm in its last mentioned direction, a toggle for moving the arm awayflrom said abutment, said abutment serving also as limiting means forlimiting movement of the toggle to lock the toggle in straightenedcondition, and means whe -ebyghe'toggle is key-controlled.-

supporting' frame madel up of a member between said plates to w fichsaid plat" rer1g1dly connected, anfarm ar- 85 mentof the arm; togglemechanism arranged between said plates; being supported partly by saidplates and partly by said arm, a key, and one oft} said plates having akeyhole "formed therethrough through which a key 4 0 may be insertedinto engagement with said toggle for operating the togglet'o swing thearm to its for-wardposition; A device offthe classdescribedficom-'prising "a supporting-frame made up of a pajirnf plates spacecbapai'ftand an end wall memberbetween sai'id plates to which said plates arerigidly;connected. an 'arm a rranged betweenlsaid plates being pivotallymounted to swingfromabackward to a forward position aspring interposedbetween said armz and' said end wall member for urging the arm toitsbackward position. a pin extending between said plates comprising anabutment for arrestlng the backward move ment of the arnnftoggle.mechanism arranged between by said plates and partly by said arm. a key.one of said plates having a keyhole formed therethrough through which akey may be inserted into engagement with said toggle for operating thetoggle to swing the arm to its forward position. and said mentioned pinconstituting also an abutment for arresting movement of the toggle tolock the toggle iii position with the arm swung forward; 7

spring urging the arm tions. an abutment for in engagement inember overwhich evlce" of'the class described, com-' tween said platesbeingipivotally i r, 41 Y W mou tedto swlng from a backward to a forsaidplates being. supported partly plates are" rigidly connec ed,"an arm"at:

ranged between 'said plates. beingipiyotally: mounted to swing.from'abackw; d to a for; ward position. a spring in p osedbetween;

' ard 'movement of the arm, key-controlledmeans "for moving the am a"ainstf t'he tendency of the spring, and m ea for retaining the spring vi h the n '-'co1np1 sing a a par, of thespring tele scopes, saidniemberhaving a lso'a' part dis posed to serve as a hannner engaging.

said abutment. v I; f Y 10. A device of the class described. comprisingsupport ng frame 'made up ot' a 7 pair of plates'spacedapartan d "an endwall member p lat'esj arejrigidly connected platesspaced'apartand an endwall outer ends of said pair of links. means pivotally connecting theremaining end of said last mentioned link to said plates whereby allofsaid links constitute a toggle'received compactly between said platesand adapted to swing the arm against the tendency of the spring. and oneof saidflinkshaving a kev receiving part whereby' 'to' render the togglekey-controlled. C I l 11. A device of the class described. com prising asupporting frameinade up of a pair of plates spaced apart and an endwall member between said plates to which said I plates are rigidly connectednanva'rm ar ranged between said plates beingpiyotally mounted toswing h-omj a backwartkto a 'forward position, a springinterposed be;

; ency of the spring said mentioned end wall having a recess formed inits inner surface to receive the adjacent end of the spring whereby topermit of the use of an increased length of spring. and a lug projectingfrom said recess about which said spring telescopes to retain the springin said recess.

19. A device of the class described comprising a frame made np of a pairof plates wal gaging said switch arm and a part of said paced apart,

the switch arm in one direction nieans by which to operate the switchariii against said resilient means, and at least one of said plateshaving a laterally extending projection formed thereon to constituteattaching means for the device.

13. A device of the class described, comprising a frame. a switch armmounted by said frame. operatin mechanism for. the switch arm arrangedtween and protected by portions of said frame, and a doubleended switchblade carried by the project ing portion of said switch arm.

14:. A device of the class described, comprising a frame, a switch armpivotally mounted within said frame, 0 rating mechanism for said switcharm a so within said frame. a key. and a portion of said frame having akeyhole formed tlierethrougli through which a key may be inserted forcontrolling said operating mechanism.

15. A switch mechanism combining a swinging switch blade, a tog 1e forpositioning the same. and a detaciable key for actuating said toggle.

16. A device of the class described. comprising a supporting framehaving spaced side wall parts and a connecting wall part, an armarranged between the side wall parts being pivotally mounted to swinginto two positions. a spring interposed between said arm and saidconnecting wall part for urging the arm into one of its positions, a pmextending. between the side wall parts comprising an abutment forarresting the spring pressed movement of the armctoggle'mechanisniarranged between said side wall parts partly su ported directly therebyand partly supportet by said arm. and one of said side parts having akey-hole formed therethrough through which a key may be inserted intoengagement with said toggle for operating the toggle to swing the arminto its other position.

17. A key-controlled switch comprising a switch blade, operating meansto operate the switch blade. a pluralitv of "rotccting wall membersbetween which sai switch blade and said operating means are arranged andprotected. one of said wall parts having a frame removed from said pivotshaft to. urge keyhole formed therethrough, andakey haw ing a portionadapted to be inserted through said key-hole into position between saidpro tecting walls for engaging and operating said switch operatingmeans.

18. In a switch mechanism. a movable switch blade, a toggle for movingthe switch blade. at key for controlling the toggle. one member of thetogglehaving parts providing spaced shoulders thereon to be en aged bythe actuatin portion of the key in accordancewith the direction ofmovement of the key to make and break the toggle, and

ed thereupon and having a contact portion projecting outwardly frombetween said side wall parts, resilient means also between said sidewall )arts engaging said switch blade to normally retain the switchblade otf, and means also arranged between said side wall parts operableto swing the switch blade into on" position at will.

20. A switch mechanism comprising a supporting framemade up of a pair ofside wall parts spaced apart and a connecting wall part, a switch bladedisposed between said side wall parts, being pivotally mounted thereuponand having a contact portion projecting outwardly from between said sidewall parts, resilient means also between said side wall parts enga 'ngsaid switclr blade to normally retain tg switch blade of, and means alsoarranged between said side wall parts operable to swing the switch bladeinto on pos'tion at will, together with a key adapted to be insertedinto position between said side wall parts for operating the lastmentioned means.

In testimony whereof I atlix my'signature in the presence of twowitnesses.

' HUBERT KRANTZ.

\Vitnesses:

J. A. Nnw'rox, EMANUEL Tamar.

